Completely sheared all teeth from belt

[Jwooky]

Heading home from biketoberfest. We decided to ride as far as we could north on bikes with the girls following us in the truck and trailer. (Thankfully)

Just barely out of town, heading down I 95 ~70MPH, bike started surging and loosing power, or behaving like the clutch was slipping. We all pulled over and loaded bikes into trailer. As I was doing so looked at the belt and every single tooth was gone

While driving back in the truck, the girls reported a bunch of black bugs were hitting windshield lol. This obviously was the belt teeth.

It is the original with ~25k on it. I do not abuse it either, burnouts, dumping clutch etc.
It was looking a little sketchy, and had planned to replace this winter. Bike is also hoped up with 600 cam port polis heads etc.

I’ll post pics after we get home and unload.

Looks like there are a few options out there.
Gates
Goodyear Falcon
Panther

Anyone know if there is any with an appreciable difference in strength and durability?

My understanding is Mastiff uses 1 1/8th x 133 tooth with 14mm pitch.

 

[Jersey Big Mike]

Heading home from biketoberfest. We decided to ride as far as we could north on bikes with the girls following us in the truck and trailer. (Thankfully)

Just barely out of town, heading down I 95 ~70MPH, bike started surging and loosing power, or behaving like the clutch was slipping. We all pulled over and loaded bikes into trailer. As I was doing so looked at the belt and every single tooth was gone

While driving back in the truck, the girls reported a bunch of black bugs were hitting windshield lol. This obviously was the belt teeth.

It is the original with ~25k on it. I do not abuse it either, burnouts, dumping clutch etc.
It was looking a little sketchy, and had planned to replace this winter. Bike is also hoped up with 600 cam port polis heads etc.

I’ll post pics after we get home and unload.

Looks like there are a few options out there.
Gates
Goodyear Falcon
Panther

Anyone know if there is any with an appreciable difference in strength and durability?

My understanding is Mastiff uses 1 1/8th x 133 tooth with 14mm pitch.

When you get in check your pulley as well. With all the teeth gone that sounds like something get into the pulley.
The last pulley I replaced each of the teeth were SHARP and severely worn down.

 

[Th3InfamousI]

Seems like something caused it.

Check the rear and front pulley. These belts last a long damn time and I still have the stock belt on my oldest with 20k on it from 04 and still looks almost new.

Maybe you picked something up that got caught in one of your pulley's

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[knothead]

Yeah something happened to it...ive got 28k on my 04 with the stock belt

 

[Brent Herridge]

It is hard to wear them out. You definitely had something happen with the pulleys or tranny.

I bought a carbon fiber belt from Curtis. He had the right size and was the best price. Lots of chatter about directional installation, but he confirmed the belt he sells is not directional. You can install it either way and its OK, but I still put it on where you can read it while standing next to the bike on the ride side, where my belt is (RSD K9).

 

[Jwooky]

G

 

[Sven]

I'm going to take a guess on a few variables. I have one of those kent-moore belt tools harley dealers use. You're really pulling that belt tight so the tool's internal spring collapses to a line on the tool and then you stop at that compression point. So first question is... how tight was tight?

Next variable is the tire change and how many tires were replaced within that mileage? All you need is one change and missed the mark. This now asks the same question when you remove the chain off the sprocket teeth. Did you mark belt tooth to sprocket tooth before removing the virgin belt to sprocket, meaning, the original rear tire removed off that new bike? That was your initial break-in tooth to tooth matching wear.

This now adds to the variable of causing a new wear pattern to belt to tooth, and [loose] belt tension more or less can ride up on the tooth under load, then slides back down the tooth upon lift. If say that combination of a loose belt, a new tooth pattern; can create a 'sketchy' look to it, sans misalignment, sans grease/oil decomposing the rubber. I'll wager those two variables is how you can tell new tooth wear creates a whaa-whaa sound of a high and low spot caused by tooth decay.

Bad Boy!

Signed,
NOLTT (nice old little tension tool)

 

[Jwooky]

 

[Sven]

And too, when it comes to parts my junk science reads something like this... Rub both hands together. Which hand stayed cold? So part for part, you equally wore both parts down to a pattern from its original machined finish. Change belt and sprockets as a set. Or wear down the new part sooner using the worn part(s) you didn't replace.

 

[Sven]

That's not sketchy, that's shotoothshit

 

[bdm7250]

Gates are good quality belts, part number for your bike would be same as mine.

 

[Th3InfamousI]

View attachment 68783View attachment 68784View attachment 68785View attachment 68786

Well I think your pictures answer the question...that rear pulley is pretty damn worn out! The teeth new are rounded and the height is of the teeth should be taller in that basket and all yours are very inconsistent. I'd be willing to bet if you don't replace that you will just wear out a new belt in no-time flat.

Front looks okay, but cant see it all on the pics. Inspect it completely when you pull that cover off.

Sven brings up a good point about your belt tension, wearing the pulley that much something was a muck.

 

[bdm7250]

Well I think your pictures answer the question...that rear pulley is pretty damn worn out! The teeth new are rounded and the height is of the teeth should be taller in that basket and all yours are very inconsistent. I'd be willing to bet if you don't replace that you will just wear out a new belt in no-time flat.

Front looks okay, but cant see it all on the pics. Inspect it completely when you pull that cover off.

Sven brings up a good point about your belt tension, wearing the pulley that much something was a muck.

Should send it to supermax for rebuild, I'm sure it would be far easier for JJ than replacing. I assume his pulley is a custom piece with the contrast cut.. Link for supermax below.
http://www.supermax.net

 

[Th3InfamousI]

Should send it to supermax for rebuild, I'm sure it would be far easier for JJ than replacing. I assume his pulley is a custom piece with the contrast cut.. Link for supermax below.
http://www.supermax.net

One other thing I am just noticing and wondering if it may have contributed to that wear on the pulley. I wonder if the way that exhaust is placement is, it kinda blows right on that rear pulley. The pulley's are coated with Teflon, and starts to deteriorate around 500 degrees. Exhaust shouldn't be that hot, but the constant heat on it might be contributing.

Just something for JJ to consider as well if that pulley doesn't have much mileage on it.

Polytetrafluoroethylene - Wikipedia

en.wikipedia.org

While PTFE is stable and nontoxic at lower temperatures, it begins to deteriorate after the temperature of cookware reaches about 260 °C (500 °F), and decomposes above 350 °C (662 °F).

 

[john sachs]

1 other thing. If your front pulley IS anodized aluminum, Throw it in the garbage can. Use ONLY a STEEL front pulley.
Sven hit the nail on the head. The rear pully IS junk . The new rear pulley should have chrome plated teeth.
When installing all the new parts, be sure to have belt alignment spot on, and belt tension proper. You need to recheck belt adjustment several times inside of 500 miles.
John

 

[Sven]

With surrounding heat out of the pipe; you'd be seeing the paint cook off the frame tubes. There'd be wrinkled paint from the heat but you don't see it. Too large an air gap [for cooling] to cause heat related problems. Looks somewhat like the same step-notch off the end of the belt tooth at the output pulley. How can I say; it's like a domino effect. The 3 are knocked over is the given. Replace all.

 

[SKOGDOG]

Here is a photo of an original pulley I wore out a few years ago. The belt was fine and on the bike when I got rid of it at about 75,000 miles. I had an oil seep that plagued me for most of a season. The belt was often subject to oil, and I always suspected the pulley wear was related to abrasion from sand and dirt sticking to the oil on the belt.
The teeth were really sharp and you can see where they wore out.

 

[Jersey Big Mike]

Here is a photo of an original pulley I wore out a few years ago. The belt was fine and on the bike when I got rid of it at about 75,000 miles. I had an oil seep that plagued me for most of a season. The belt was often subject to oil, and I always suspected the pulley wear was related to abrasion from sand and dirt sticking to the oil on the belt.
The teeth were really sharp and you can see where they wore out.

I do not see a photo -- is this like 3d movies -- do I need special glasses?

 

[Th3InfamousI]

I do not see a photo -- is this like 3d movies -- do I need special glasses?

I see the photo and Rick's and I'm not sure a pulley could be even more wore out but with 75k what more can you really ask for?

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[Jersey Big Mike]

I see the photo and Rick's and I'm not sure a pulley could be even more wore out but with 75k what more can you really ask for?

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yeah pic is visible now -- damn that's as bad as the one I had go earlier this year.